From owner-freebsd-bugs@freebsd.org Fri Aug 7 07:45:08 2015 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D9EBB9B5BFB for ; Fri, 7 Aug 2015 07:45:08 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id AD57210ED for ; Fri, 7 Aug 2015 07:45:08 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id t777j81f014875 for ; Fri, 7 Aug 2015 07:45:08 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 202152] xargs -PN either crashes or always returns an error Date: Fri, 07 Aug 2015 07:45:08 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: 11.0-CURRENT X-Bugzilla-Keywords: regression X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: jbeich@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status keywords bug_severity priority component assigned_to reporter cc blocked attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 07 Aug 2015 07:45:08 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202152 Bug ID: 202152 Summary: xargs -PN either crashes or always returns an error Product: Base System Version: 11.0-CURRENT Hardware: Any OS: Any Status: New Keywords: regression Severity: Affects Only Me Priority: --- Component: bin Assignee: freebsd-bugs@FreeBSD.org Reporter: jbeich@FreeBSD.org CC: lifanov@mail.lifanov.com Blocks: 199976 Created attachment 159633 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=159633&action=edit v0 Looking under tests/ directory there're none for -P option, so not surprising based 286289 regressed it. The issue appears to be improper rebase against base r285552. $ getconf CHILD_MAX 100 $ printf 'a\nb\nc\n' | xargs -P0 echo xargs: -P 0: too small # -O2 build (default) $ printf 'a\nb\nc\n' | xargs -P2 echo Segmentation fault # -O0 build $ printf 'a\nb\nc\n' | xargs -P2 echo xargs: invalid number for -P option $ lldb ./xargs --core /path/to/xargs.core (lldb) target create "./xargs" --core "/path/to/xargs.core" Core file '/path/to/xargs.core' (x86_64) was loaded. Process 0 stopped * thread #1: tid = 0, 0x00000000004019aa xargs`main + 570, name = 'xargs', stop reason = signal SIGSEGV frame #0: 0x00000000004019aa xargs`main + 570 -> 0x4019aa : cmpb $0x0, (%rax) 0x4019ad : jne 0x402426 ; main + 3254 0x4019b3 : movslq 0x201d06(%rip), %rcx ; maxprocs 0x4019ba : testq %rcx, %rcx (lldb) bt * thread #1: tid = 0, 0x00000000004019aa xargs`main + 570, name = 'xargs', stop reason = signal SIGSEGV * frame #0: 0x00000000004019aa xargs`main + 570 frame #1: 0x000000000040168f xargs`_start + 367 -- You are receiving this mail because: You are the assignee for the bug.